JP4327821B2 - Grain suction transfer device - Google Patents

Description

  The present invention relates to a grain suction conveyance device.

  Conventionally, a transported object supply unit for storing grains such as rice as a transported object, an air transport path for allowing grains to pass along with an air current, a suction mechanism for generating an air stream by intake air in the air transport path, and the air transport path There is a grain suction conveyance device that includes a conveyance object receiving unit that receives a conveyance object that has been conveyed by air.

In such a grain sucking and conveying apparatus, the present applicant arranges a receiving blade for receiving the conveyed item while rotating in the same direction as the inflow direction of the conveyed item in the conveyed item receiving unit, and conveying the air flowing in from the air conveying path. The thing which prevented that an object collided with the wall of a conveyed product receiving part with the momentum as it was, and was damaged was proposed (for example, refer patent document 1).
JP 2006-7057 A

  Although the above-described conventional grain suction / conveying device can surely prevent damage at the time of grain recovery, it requires a mechanism for rotatably receiving the receiving blades, which may increase the cost of the entire apparatus.

  In addition, there are cases where foreign matters other than grains, such as insects, lint, hair, and cocoon, are mixed in the conveyed product, and it is possible to meet the demand for efficient removal of these. There wasn't.

  An object of this invention is to provide the grain suction conveyance apparatus which can solve the said subject.

(1) The present invention described in claim 1 includes a grain supply unit that stores grains to be conveyed, an air conveyance path that conveys the grains supplied from the grain supply unit by air, and a communication with the air conveyance path. A grain recovery unit that receives and recovers the grain conveyed by air from the air conveyance path, and a suction mechanism that is connected to the grain recovery part and generates an air flow in the air conveyance path by intake air. In the suction conveyance device, the end portion of the air conveyance path is curved upward in the receiving hopper of the grain recovery unit so that the terminal opening of the air conveyance path faces upward, and the end opening is spaced through a space. The grain receiver formed in the shape of an umbrella is disposed at a position facing each other and spaced apart by a predetermined distance , and the grain receiver is attached to the inner wall of the ceiling portion of the receiving hopper via a stay. ,
The suction mechanism includes a suction pump and a suction pipe communicating with and connected to an intake cylinder projecting from an upper end portion of the ceiling portion. By operating the suction pump, the inside of the receiving hopper and the air conveyance path The air can be sucked through the air inlet of the ceiling .

( 2 ) The present invention according to claim 2 is the grain suction conveyance device according to claim 1 , wherein the air conveyance path has a single opening in which the grain supply section faces a starting end opening that also serves as an outside air inlet. An upstream pipe, a plurality of downstream pipes each having a terminal opening communicating with a plurality of grain collection sections, and a conveyance path switching section that selectively communicates the upstream pipe and one of the plurality of downstream pipes; It is characterized by providing.

  According to the present invention, with a simple structure that can be realized at low cost, it is possible to separate and remove foreign substances having a relatively low specific gravity mixed in the grain as a conveyed product by conveying air. In addition, since the air conveyance speed of the conveyed product can be reduced in the grain recovery unit, damage can be reduced as much as possible even if the grain collides with the wall of the grain recovery unit.

  The grain suction conveyance device according to the present embodiment communicates with a grain supply unit that stores grains to be conveyed, an air conveyance path that conveys air supplied from the grain supply unit, and the air conveyance path. Grain suction comprising: a grain recovery unit that receives and collects the grain that has been conveyed by air from the air conveyance path; and a suction mechanism that is connected to the grain collection part and that generates an air flow in the air conveyance path by suction. In the transport device, the end portion of the air transport path is curved upward in the grain recovery unit so that the end opening of the air transport path faces upward, and a grain receiver is disposed at a position facing the end opening. It is arranged.

  That is, instead of a pressure-feeding system that tends to increase in size, air transportation by suction is used to achieve a compact configuration, and grain such as rice to be transported can be gently transported.

  In addition, the end portion of the air conveyance path is inserted into the grain collection portion, the end portion is curved upward, the end opening is directed upward, and the grain receiver is disposed at a position facing the end opening. The grain receiver once receives and disperses the grain conveyed by the grain, and then drops and collects it.

  Further, the grain receiver may be plate-shaped, but it is preferable that the grain receiver is formed in a substantially conical umbrella shape having a concave bottom surface for receiving the grain.

  And when the conveyed product is received by the grain receiver, the collided grain is easy to disperse, and the foreign matter mixed in can be easily separated, and the foreign matter having a relatively low specific gravity mixed in the grain. For example, insects, lint, hair, cocoons, etc. will float in the grain recovery section without sudden descent after colliding with the grain receptacle. It can be easily removed by suction by the mechanism, and can be efficiently recovered by the carrier air.

  As described above, according to the present embodiment, when the conveyed item is rice or the like, if the air is conveyed to a predetermined grain collection unit by the grain suction device according to the present embodiment, the collected rice is more foreign than the conventional one. As a result, the product value can be increased.

  In addition, since the final conveying speed is slowed by forming the end of the air conveyance path upward, the impact on the grains that collide with the grain receiver is reduced, so damage to the grains is possible. Can be prevented.

  Also, by separating and removing the foreign matter, for example, the foreign matter can be prevented from adhering to the rotary valve disposed on the downstream side of the grain recovery unit, so that a failure caused by the foreign matter can be prevented and the blades can be prevented. Since it becomes difficult to get dirty, it is possible to reduce maintenance.

  The suction mechanism that is connected to the grain recovery unit and generates an air flow in the air conveyance path by intake air includes a suction pump and a suction pipe that connects the pump and the grain recovery unit. In the middle of the suction pipe, it is preferable to provide a filter for capturing the aforementioned foreign matter.

  In the grain suction conveyance device, the air conveyance path communicates with the grain supply unit a single upstream pipe facing a start end opening serving also as an outside air inlet, and a plurality of grain collection units with terminal openings. The plurality of downstream pipes and a conveyance path switching unit that selectively connects the upstream pipe and one of the plurality of downstream pipes in communication can also be provided.

  By adopting such a configuration, it is possible to convey a grain to a desired grain collection unit by installing a plurality of grain collection units and operating the conveyance path switching unit. In addition, the grains collected in any of the grain collection units are less painful and the amount of contamination is reduced.

  As the transport path switching unit, for example, a multi-stage connection pipe group, and one connection pipe in the connection pipe group communicates with a start end at the upstream pipe and a terminal end with one of the plurality of downstream pipes. Thus, it can be set as the structure provided with the actuator which translates the position of the said connection pipe group. As the actuator, for example, an actuator capable of a reciprocating motion such as an air cylinder or an electric cylinder, or a combination of an electric motor or the like with a predetermined movement direction conversion mechanism such as a gear is conceivable.

  With such a configuration, the configuration of the conveyance path switching unit is simplified, and an alternative change to one of the plurality of downstream pipes communicating with the grain recovery unit can be easily and reliably performed.

  Hereinafter, specific embodiments of the grain suction and conveyance device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic overall explanatory view showing a grain suction / conveying apparatus A according to the present embodiment, and FIG.

  As shown in FIG. 1, the grain suction conveyance device A includes a grain supply unit 1, an air conveyance path 2 serving as a conveyance path for grains a such as rice supplied from the grain supply unit 1, and the air conveyance path 2. Grain collection unit 4 that receives grain a that has been conveyed by air, and a suction pump that is connected to and communicates with the grain collection unit 4 and sucks grain a together with air through the grain collection unit 4 and the air conveyance path 2 And a suction mechanism 3 (not shown).

  The grain a stored in the grain supply unit 1 is supplied to the air conveyance path 2 by driving the suction mechanism 3 and can be conveyed by air to the grain collection unit 4 by suction.

  The grain supply unit 1 includes a hopper that supplies the stored grain a to the air conveyance path 2. A cylindrical peripheral wall part 12 is continuously provided on a funnel-shaped bottom surface 11 that is inclined downward. A short grain supply cylinder 14 having a grain supply port 13 protrudes downward. Further, an openable / closable shutter (not shown) is attached to the grain supply cylinder 14, and the opening width of the grain supply port 13 is adjusted by the sliding amount of the shutter to supply the grain a to the air conveyance path 2 per hour. The amount is adjustable. The structure of such a shutter is not particularly limited, and for example, a simple structure using a slidable flat plate may be used.

  The air conveyance path 2 is formed in a cylindrical shape having openings at both ends, the start end portion 2a is curved upward at a substantially right angle, and the start end opening 27 is directed upward. The air conveying path 2 and the grain recovery unit 4 are connected in communication by extending horizontally from the start end 2 a and penetrating the end 2 b into the upper part of the side wall 40 of the grain recovery unit 4. Reference numeral 2 c denotes a joint between the air conveyance path 2 and the side wall 40 of the grain collection unit 4.

  Moreover, as shown in FIG. 2, the start end opening 27 which becomes the grain introduction port formed in the start end portion 2a of the air conveyance path 2 has a structure also serving as an outside air communication port. The grain supply port 13 faces the start end opening 27 (outside air communication port) at a predetermined distance.

  The starting end opening 27 serving as an outside air communication port is formed in the enlarged diameter portion 21 having a diameter larger than that of the other part of the air conveyance path 2 so as to have a larger diameter than the grain supply port 13. ing.

  As described above, in the present embodiment, the outside air communication port that is an intake port for outside air drawn into the air conveyance path 2, and the grain introduction port that takes in grains a such as rice to be air conveyed into the air conveyance path 2. Is also used by the start opening 27 of the air conveying path 2, and as shown in FIG. 2, the grain a is easily supplied into the air conveying path 2 by natural fall, and the grain a is dropped. Since the outside air is sucked from the mouth and functions as an outside air communication port, the grain a is effectively supplied into the air conveyance path 2 without being dissipated, and smoothly flows through the air conveyance path 2 as it rides on the airflow. And is effectively accommodated in the grain collection unit 4.

  Further, since the grain supply unit 1 and the air conveyance path 2 are independent from each other, a process of connecting the grain supply unit 1 and the air conveyance path 2 by welding or the like is not required when the grain suction conveyance apparatus A is manufactured. Further, the entire grain suction / conveying device A can be easily manufactured, and the cost can be reduced also in this respect.

  As shown in FIG. 1, the grain collection unit 4 includes a receiving hopper 41 communicating with the air conveyance path 2. The receiving hopper 41 includes a cylindrical main body 48 and upper and lower portions of the main body 48. The upper portion connected to the bottom portion 49 is reduced in diameter, and the ceiling portion 47 gradually increases in diameter toward the lower portion, and conversely, the bottom portion 49 increases in diameter in the upper portion and gradually decreases in diameter toward the lower portion. A grain outlet 42 is provided at the lower end of the grain, and a rotary valve 43 is disposed immediately below the grain outlet 42 so that the grain a can be discharged from the receiving hopper 41 to the outside.

  At the upper end of the ceiling portion 47, an intake cylinder 44 is projected, and a suction pipe 45 forming a part of the suction mechanism 3 is connected to the intake cylinder 44 in communication. By operating a suction pump (not shown) of the suction mechanism 3, the air inside the receiving hopper 41 and the air conveyance path 2 is sucked and the grain a in the grain supply unit 1 is conveyed to the grain recovery unit 4 by air. can do. Reference numeral 46 denotes an intake port communicating with the intake cylinder 44.

  With the above-described configuration, the grain suction conveyance device A can convey the grain a together with air, and may use the suction mechanism 3 having a relatively small capacity as compared with an air feeding device or the like that pumps air. Therefore, the power consumption is small and energy saving, and the air conveying path 2 has a simple structure in which both the start end 2a and the end end 2b are bent upward, so that the entire apparatus is compact. In addition, the cost can be reduced.

  In the grain suction conveyance device A having the above-described configuration, in the present embodiment, the end portion 2b of the air conveyance path 2 is extended into the grain collection unit 4, and is bent at a substantially right angle upward from the middle, and formed at the tip thereof. The structure is characterized in that the end opening 29 is opened upward and the grain receiver 9 is disposed at a position facing the end opening 29.

  Moreover, the grain receiver 9 is formed in an umbrella shape having a concave surface for receiving the grain. That is, as shown in the figure, the grain receiver 9 has a substantially conical umbrella shape with a concave bottom surface and is opposed to the terminal opening 29 formed in the terminal part 2b of the air conveying path 2. Thus, when the grain a jumps upward from the terminal opening 29, it is temporarily received by the concave portion of the grain receiver 9.

  In this way, the grain receiver 9 formed in the shape of an umbrella temporarily receives the grain a conveyed by air, disperses it downward, and then drops and collects the grain a while it is mixed in the grain a. In addition, foreign matter having a low specific gravity, for example, insects, lint, hair, cocoon, etc., is floated inside the grain collection unit 4 and can be easily sucked and removed by the suction mechanism 3.

  Note that the conveyed grain a is forced to change upward through the curved terminal end 2b, and the conveying speed of the grain a is also reduced more than in the horizontal direction. Even if it jumps out directly from 29 and collides with the grain receiver 9, the damage is small and it is possible to prevent the grain a from being damaged as much as possible.

  By the way, the ceiling portion 47 of the receiving hopper 41 is detachably attached to the upper portion of the main body portion 48. In this embodiment, a stay (not shown) is attached to the inner wall of the ceiling portion 47, and the grain is attached to the stay. A receiver 9 is attached.

  With the configuration described above, the grain a that collides with the grain receiver 9 is dispersed downward and falls as it is, and is discharged from the grain outlet 42, but is relatively mixed in the grain. In addition, foreign matters having a low specific gravity (insects, lint, hair, cocoons, etc.) are suspended inside the receiving hopper 41 without suddenly dropping after colliding with the grain receiver 9. Therefore, the suction mechanism 3 can be easily sucked and removed from the intake cylinder 44 together with the air. A filter for capturing foreign matter is preferably provided in the middle of the intake cylinder 44 or the suction pipe 45, and the filter may be appropriately cleaned or replaced.

  As described above, according to the present embodiment, the foreign matter mixed in the grain a such as rice in the grain supply unit 1 can be easily separated from the grain a in an efficient manner. Can be recovered automatically. Moreover, since the grains a are dispersed downward by the umbrella-shaped grain receiver 9, there is no possibility of being sucked to the suction mechanism 3 side.

  Further, by removing the foreign matter, for example, the attachment of the foreign matter including flaws to the blades of the rotary valve 43 is greatly reduced, which is extremely advantageous in terms of maintenance such as cleaning work.

  The diameter of the grain receiver 9 is desirably set in the range of 40 to 85, where the diameter of the receiving hopper 41 is 100. In the case of 40 or less, the diameter of the grain receiver 9 is small, and the width of the foreign substance removal flow path R formed between the peripheral edge of the grain receiver 9 and the side wall 40 of the receiving hopper 41 becomes too wide. This is because a itself may be drawn into the suction pipe 45, and if it is larger than 85, the width of the foreign matter removal flow path R is too small and the foreign matter may not be efficiently sucked.

  Further, regarding the distance between the terminal opening 29 formed in the terminal end 2 b of the air conveyance path 2 and the grain receiver 9, the diameter of the grain receiver 9 and the speed and dissipation of the grain a spouted from the terminal opening 29. What is necessary is just to set suitably in consideration of a state etc.

  With this configuration, the end portion 2b of the air conveyance path 2 is curved upward at a substantially right angle inside the grain collecting unit 4, and the end opening 29 formed at the tip is opened upward, while the end opening Since the grain receiver 9 for temporarily receiving the grain a is placed opposite to the grain 29, foreign substances having a relatively low specific gravity mixed in the grain a can be easily sucked and removed.

  Moreover, since the end portion 2b of the air conveying path 2 is curved upward, the speed at which the grain a blows out into the receiving hopper 41 is reduced, and even if the grain a collides with the grain receiver 9, the grain a is damaged thereby. Can be prevented as much as possible.

  Next, another embodiment of the grain suction conveyance device A will be described with reference to FIGS. FIG. 3 is an explanatory diagram of a grain suction conveyance device A according to another embodiment, and FIG. 4 is an explanatory diagram of a conveyance path switching unit.

  In this embodiment, the basic configuration is the same as the embodiment shown in FIG. 1 and FIG. 2, but the air transport path 2 has a single upstream pipe 7 facing the grain supply unit 1, The plurality of grain collecting units 4 and 4 are configured to be separated into a plurality of downstream pipes 8 each having a terminal end connected in communication, and the upstream pipe 7 and one of the plurality of downstream pipes 8 are alternatively selected. The difference is that a configuration is provided in which a conveyance path switching unit 6 that is connected in communication is provided. In addition, about the other component same as previous embodiment, the same code | symbol is attached | subjected and description here is abbreviate | omitted.

  That is, in this embodiment, a plurality of grain collection units 4 can be installed, and the grain a can be conveyed to the desired grain collection unit 4 by operating the conveyance path switching unit 6. In this case, it is possible to remove foreign substances having a low specific gravity.

  Here, the configuration of the transport path switching unit 6 will be described. As shown in FIGS. 3 and 4, the transport path switching unit 6 includes a connecting pipe group 60 arranged in multiple stages, and one connecting pipe 61 (62) in the connecting pipe group 60 having a start end 61 a (62 a). And an actuator 63 that translates the position of the connecting pipe group 60 so that the end 61b (62b) communicates with one of the plurality of downstream pipes 8.

  Reference numeral 64 denotes a box-shaped casing in which the connecting pipe group 60 is accommodated. As shown in FIG. 4, the casing 64 includes an upstream opening 64 a communicating with the upstream pipe 7 and downstream pipes 8 and 8. Two communicating openings, that is, a first downstream opening 64b and a second downstream opening 64c are formed.

  In the present embodiment, the grain collection unit 4 is provided with two units, a first grain collection unit 4-1 and a second grain collection unit 4-2. Therefore, for the downstream pipe 8, the first downstream pipe 8-1 communicated with the first grain collection unit 4-1, and the second downstream pipe 8-2 communicated with the second grain collection unit 4-2. As shown in FIG. 4, the connection pipe group 60 having a multi-stage is provided with a first connection pipe 61 for transporting the grain a to the first grain collection unit 4-1, and a second connection pipe 60. The second connection pipe 62 for conveying the grain a to the grain recovery unit 4-2 is arranged in parallel via a connection plate 65. In the present embodiment, since the first downstream pipe 8-1 is located on the upper side and the second downstream pipe 8-2 is located on the lower side, the first connecting pipe 61 is bent and formed in a gentle S-shape. The second connecting pipe 62 is a straight pipe.

  Further, as the actuator 63, an air cylinder or an electric cylinder capable of rectilinear reciprocation can be preferably used, but the cylinder is not necessarily used. It is good also as a structure which combined the direction change mechanism. In this embodiment, an air cylinder is used, and a cylinder main body 66 is disposed at the bottom of the casing 64, and a cylinder connecting rod 67 extended from the cylinder main body 66 is connected to the connecting pipe group 60.

  With the above configuration, when the grain a is conveyed by air to the first grain collection unit 4-1, the actuator 63 is driven to contract the cylinder coupling rod 67 as shown in FIG. The start end 61a of the pipe 61 may be communicated with the upstream opening 64a, and the end 61b may be communicated with the first downstream opening 64b. On the other hand, when the grain a is conveyed by air to the second grain collecting unit 4-2, as shown in FIG. 4B, the actuator 63 is driven to extend the cylinder connection rod 67, which is a straight pipe. What is necessary is just to connect the start end 62a of the 2nd connection pipe 62 to the upstream opening 64a, and the terminal end 62b to the 2nd downstream opening 64c.

  According to the present embodiment, the configuration of the transport path switching unit 6 is also simplified, and it is selected as one of the downstream pipes 8-1, 8-2 communicating with the grain collection units 4-1, 4-2. A single change can be made easily and reliably.

  According to the embodiment described above, the following grain suction and conveyance device can be realized.

  Grain supply unit 1 that stores grain a to be conveyed, air conveyance path 2 that conveys grain a supplied from grain supply unit 1 by air, and air conveyance path 2 that communicate with air conveyance path 2. A cereal recovery unit 4 that receives and recovers the cereal a conveyed by air, and a suction mechanism 3 that is connected to the cereal recovery unit 4 and generates an air flow in the air conveyance path 2 by intake air. The end portion 2b of the air conveyance path 2 is curved upward in the grain collection unit 4 so that the end opening 29 of the conveyance path 2 faces upward, and the grain receiver is located at a position facing the end opening 29. 9 is a grain suction conveyance device.

  The grain receiver 9 is a grain suction and conveyance device formed in an umbrella shape having a concave surface for receiving the grain a.

  In addition, the air conveying path 2 includes a single upstream pipe 7 facing the grain supply unit 1 and a start end opening 27 that also serves as an outside air introduction port, and a termination opening 29 and a plurality of grain recovery units 4 and 4, respectively. Grain suction conveyance provided with a plurality of downstream pipes 8, 8 communicating with 29, and a conveyance path switching unit 6 that selectively connects the upstream pipe 7 and one of the plurality of downstream pipes 8, 8. apparatus.

  Although the present invention has been described through each embodiment, the present invention is not limited to each embodiment, and the shape of each component and the layout of the apparatus are within the scope of the claims. Etc. can be appropriately changed. For example, the shape of the grain receiver 9 is not necessarily an umbrella shape, and may be a plate shape. At least, the shape should not be such that the collided grain a soars upward.

It is a typical whole explanatory view showing the grain suction conveyance device concerning a 1st embodiment. It is explanatory drawing which shows the start end part of an air conveyance path. It is explanatory drawing which shows the grain suction conveyance apparatus which concerns on other embodiment. It is explanatory drawing by the cross sectional view of a conveyance path switching part.

Explanation of symbols

A Grain suction conveying device a Grain 1 Grain supply part 2 Air conveyance path 2a Start end part 2b Termination part 3 Suction mechanism 4 Grain collection part 6 Conveyance path switching part 7 Upstream pipe 8 Downstream pipe 9 Grain receptacle 29 End opening

Claims (2)

A grain supply unit for storing grains to be conveyed;
An air conveyance path for pneumatically conveying the grains supplied from the grain supply unit;
A grain collection unit that communicates with the air conveyance path and receives and collects the grains conveyed by air from the air conveyance path;
A suction mechanism that is connected to the grain recovery unit and generates an air flow in the air conveyance path by intake air;
In the grain suction conveyance device provided with
The end portion of the air conveyance path is curved upward in the receiving hopper of the grain recovery unit so that the end opening of the air conveyance path faces upward, and is opposed to the end opening through a space and has a predetermined distance. A grain receiver formed in an umbrella shape is disposed at a position spaced apart from each other , and the grain receiver is attached to the inner wall of the ceiling portion of the receiving hopper via a stay,
The suction mechanism includes a suction pump and a suction pipe communicating with and connected to an intake cylinder projecting from an upper end portion of the ceiling portion. By operating the suction pump, the inside of the receiving hopper and the air conveyance path The grain sucking and conveying apparatus characterized in that the air can be sucked through the air inlet of the ceiling . The air conveyance path is
A single upstream pipe facing the start opening that also serves as an outside air inlet in the grain supply unit;
A plurality of downstream pipes each having a terminal opening communicating with a plurality of grain recovery units;
A transfer path switching unit that selectively connects the upstream pipe and one of the plurality of downstream pipes,
The grain suction conveyance device according to claim 1 , further comprising:

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